Bug 928390 – Python SSLSocket.getpeercert() incorrectly returns an empty Subject Alternative Name from peer certificate.

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Bug 928390 - Python SSLSocket.getpeercert() incorrectly returns an empty Subject Alternative Name from peer certificate.

Summary:	Python SSLSocket.getpeercert() incorrectly returns an empty Subject Alternati...

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	python (Show other bugs)
Sub Component:
Version:	6.4
Hardware:	Unspecified Unspecified

Priority	high Severity high
Target Milestone:	rc
Target Release:	---
Assigned To:	Matej Stuchlik
QA Contact:	Jan Kepler
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2013-03-27 10:42 EDT by Ken Giusti
Modified:	2016-01-31 21:14 EST (History)
CC List:	7 users (show)

See Also:	885173
Fixed In Version:	python-2.6.6-47.el6
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2013-11-21 04:14:08 EST
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Fix backported from 2.7 (471 bytes, patch) 2013-06-11 08:25 EDT, Matej Stuchlik	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Python	13034	None	None	None	Never
Red Hat Product Errata	RHSA-2013:1582	normal	SHIPPED_LIVE	Moderate: python security, bug fix, and enhancement update	2013-11-20 16:39:43 EST

Groups: None (edit)

Description Ken Giusti 2013-03-27 10:42:29 EDT

Description of problem:

As documented, SSLSocket.getpeercert() should provide access to the Subject Alternate Name field from the peer's certificate.  A bug in python will result in the Subject Alternate Name field to not be available to the application.

This could cause a false authentication failure if the application performs certificate hostname checking.

Version-Release number of selected component (if applicable):

python-2.6.6-36

How reproducible:

100%

Steps to Reproduce:
1. python client connects to SSL server which has a SAN in its certificate
2. Have python access the certificate via getpeercert()
3. The returned map should have an entry for 'subjectAltName'
  
Actual results:

No entry for 'subjectAltName'

Expected results:

The map contains a 'subjectAltName' entry with a value that matches the SAN from the peer certificate.

Additional info:

The fix for this bug is straightforward, and has been fixed upstream in 2.7.3.  See http://bugs.python.org/issue13034

Comment 2 Bohuslav "Slavek" Kabrda 2013-05-22 08:44:38 EDT

This patch will work ok with RHEL 6 Python 2.6.

Comment 3 Matej Stuchlik 2013-06-11 08:25:46 EDT

Created attachment 759603 [details]
Fix backported from 2.7

Comment 11 errata-xmlrpc 2013-11-21 04:14:08 EST

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-1582.html

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